var a;
var b;
function MouseOnRegister(e) {
    a = e.style.background;
    e.style.background = "limegreen";
}

function MouseOutRegister(e) {
    e.style.background = a;
}
function MouseOnRegister2(e) {
    b = e.style.background;
    e.style.background = "deepskyblue";
}

function MouseOutRegister2(e) {
    e.style.background = b;
}